A prefabricated bridge deck auxiliary facility grounding connector

Abstract

A prefabricated bridge deck ancillary facility grounding connector comprises a metal fixing (1), a pre-embedded mounting seat (3), and a guide plate (2), wherein the metal fixing (1) assembles and connects the guide plate (2) and the pre-embedded mounting plate, the pre-embedded mounting seat (3) is pre-embedded in the upper surface of the bridge deck, the guide plate (2) is pre-embedded in the bottom plate of the prefabricated bridge deck ancillary facility, the pre-embedded mounting seat (3) is longitudinally connected in series in the bridge deck, and the guide plate (2) is connected to a grounding terminal in the prefabricated bridge deck ancillary facility. The prefabricated bridge deck ancillary facility grounding connector provided by the present invention realizes the integration of bridge deck ancillary facility power generation through the connecting member being grounded and connected in series in the bridge deck, improves the grounding efficiency, achieves a better grounding effect, reduces the complexity of prefabricated bridge deck splicing, shortens the construction period, and increases the integrity of prefabricated bridge deck ancillary facilities.

Description

Technical Field

[0001] The invention relates to the technical field of public transportation facilities, and in particular to an integral bridge deck accessory facility grounding connector. Background Art

[0002] Existing railway bridges generally have pre-embedded steel bars and cast-in-place concrete protective walls on the flange plates on both sides of the box beam when prefabricating the beam body; the outermost shield plate is a prefabricated structure with pre-embedded railings and sound barrier interfaces as well as steel bars connecting to the bridge deck, and the shield plate needs to be connected to the bridge flange through cast-in-place concrete vertical walls; the middle cable trough vertical wall divides the power trough and the communication signal trough, and cast-in-place concrete is also used. A waterproof layer and a concrete protective layer of a certain thickness are required at the exposed part of the bridge deck at the bottom of the trough.

[0003] This structure and construction method have high requirements on the site. At the same time, the shield structure has a large deadweight and requires a lot of manpower and formwork. Affected by climate and human factors, the quality of pouring construction is not easy to guarantee and the construction period is long. In addition, cast-in-place construction also has an impact on the environment along the line.

[0004] There is an existing prefabricated bridge deck ancillary facility with an integral mountain-shaped structure, which solves the above problems and can be directly connected to the bridge flange plate by bolts or other connection methods. However, the traditional embedded mounting seat is a cylindrical structure, which is not strong enough to support the prefabricated bridge deck ancillary facilities made of concrete. At the same time, a large number of grounding wires need to be embedded inside the prefabricated bridge deck ancillary facilities, and their integration is poor, resulting in reduced integrity of the steel-concrete structure and increased possibility of cracking.

[0005] Patent CN201810104229 discloses a new type of installation structure and installation method of an electrical panel cabinet, in which a strip metal fixing piece is provided for being set in concrete, the strip metal fixing piece is a hollow structure, and an opening is provided at its upper end along the axial direction, a threaded fastener extending from the opening is provided in the hollow structure, a matching nut is provided at the extending part of the threaded fastener, and the bottom of the threaded fastener is clamped at the lower edge of the opening of the strip metal fixing piece. However, it is used in mechanical structures, has poor guidance for civil engineering, and cannot solve the practical problem of grounding prefabricated bridge deck ancillary facilities and bridge decks.

[0006] Therefore, there is a need for a prefabricated bridge deck ancillary facility grounding connector that can integrate the grounding function and the bridge deck connection function. Summary of the invention

[0007] The object of the present invention is to provide a connector for prefabricated bridge deck ancillary facilities which has integrated grounding, simple structure, convenient installation, good bearing capacity and good durability.

[0008] The present invention provides a prefabricated bridge deck ancillary facility grounding connector, comprising a metal fixing, an embedded mounting seat, and a guide plate. The metal fixing assembles the guide plate on the embedded mounting seat, the embedded mounting seat is embedded in the upper surface of the bridge deck, the guide plate is embedded in the interior of the bottom plate of the prefabricated bridge deck ancillary facility and is provided with a through hole penetrating the bottom plate structure, the embedded mounting seat is longitudinally connected in series in the bridge deck, and the guide plate is connected to the grounding terminal on the outer surface of the prefabricated bridge deck ancillary facility.

[0009] The pre-embedded mounting seat longitudinally connected to the bridge deck ancillary facilities usually adopts pre-embedded steel bars on the flanges on both sides of the box beam, cast-in-place concrete protective walls and other structures. After the prefabricated bridge deck is adopted, the prefabricated bridge deck needs to calibrate the position of the prefabricated ancillary facilities diversion joint and the bridge deck during assembly, which is difficult to assemble. With this technical solution, the connector and the diversion part are integrated, which effectively reduces the complexity of the diversion system of the prefabricated bridge deck ancillary facilities, simplifies the complexity of production and construction, and can effectively shorten the construction period. At the same time, the grounding wire inside the prefabricated bridge deck ancillary facilities is simplified and integrated into the grounding connector. The grounding connectors are connected in series with the bus in the bridge deck to be grounded, and the grounding wire joint set on the longitudinal end face of the prefabricated bridge deck ancillary facilities is cancelled, ensuring the integrity of the prefabricated bridge deck ancillary facilities.

[0010] A prefabricated bridge deck ancillary facility grounding connector described in the present invention, as a preferred embodiment, the embedded mounting seat includes a pre-embedded mounting seat body and a guide cable, the embedded mounting seat body is connected to one end of the guide cable, and the other end of the guide cable is grounded, the embedded mounting seat body includes a columnar mounting seat and anchor bars, the upper surface of the columnar mounting seat is provided with threaded countersunk holes, the anchor bars are L-shaped, and the anchor bars are evenly arranged on the outer periphery of the lower end of the columnar mounting seat and the contact surface is parallel to the axis of the columnar mounting seat.

[0011] Anchor bars are set on the side of the columnar mounting seat body to strengthen the anchorage and pull-out resistance of the embedded mounting seat, making the embedded mounting seat more stable. The conductive cable is connected to the embedded mounting seat to realize the connection between the conductive system of the prefabricated bridge deck auxiliary facilities and the bridge deck, and the grounding terminal current is collected to the bridge deck position. Ribbed steel bars are used as anchor bars, and the mechanical bite effect caused by the protruding transverse ribs on the surface is used to enhance the bonding force between the steel bars and the concrete, and improve the pull-out resistance of the sleeve.

[0012] The prefabricated bridge deck ancillary facility grounding connector described in the present invention is, as a preferred embodiment, a metal fixing part including a screw, a guide contact part, a top cover, and a force transmission gasket. The screw is arranged at the upper end of the guide contact part, the top cover is arranged at the upper end of the guide contact part, the guide contact part contacts the guide plate, the force transmission gasket has a through hole and is interference fit with the guide contact part through the through hole, and the lower bottom position of the top cover contacts and connects to the force transmission gasket.

[0013] The force transmission gasket is used to increase the contact area, reduce pressure, prevent loosening, prevent metal fixings from loosening, reduce wear on the guide plate and the top cover, and the force transmission gasket also plays a role in protecting the embedded sleeve. The guide contact part contacts the guide plate to achieve the transmission function.

[0014] A prefabricated bridge deck ancillary facility grounding connector described in the present invention, as a preferred embodiment, the guide plate includes guide ribs, a guide plate body and fixed ribs, the guide plate body is provided with a through hole perpendicular to the plate surface, the metal fixing piece passes through the through hole of the guide plate body to assemble the guide plate to the threaded countersunk hole of the columnar mounting seat, the guide ribs and the fixed ribs are both arranged perpendicular to the axis of the through hole, the guide ribs are connected to the guide plate body, the fixed ribs are welded to the guide plate surface, and the length of the fixed ribs is greater than the length of the guide plate body surface.

[0015] A prefabricated bridge deck ancillary facility grounding connector described in the present invention, as a preferred embodiment, the guide plate includes a guide plate body and fixed ribs, the guide plate body is provided with through holes perpendicular to the plate surface, the fixed ribs are arranged perpendicular to the axis of the through holes, the fixed ribs are welded to the guide plate surface, and the length of the fixed ribs is greater than the length of the guide plate body.

[0016] The prefabricated bridge deck ancillary facility grounding connector described in the present invention, as a preferred embodiment, the guide plate also includes a thin-walled steel pipe, the thin-walled steel pipe includes a transverse steel pipe and a vertical steel pipe, the transverse steel pipe and the vertical steel pipe are connected in an L-shape and the inside of the steel pipes are connected, the length of the vertical steel pipe is greater than or equal to the height of the guide plate, and the transverse steel pipe is arranged on the lower bottom surface of the guide plate.

[0017] Thin-walled steel pipes are used as reserved grouting holes. When prefabricating the formwork, grouting is injected through the thin-walled steel pipes to fill the internal through holes. The diameter of the through holes is larger than the diameter of the metal fixings to avoid installation problems caused by errors.

[0018] The prefabricated bridge deck ancillary facility grounding connector described in the present invention is, as a preferred embodiment, one end of the guide rib is arranged on the side of the guide plate, and the other end of the guide rib is connected to the grounding terminal.

[0019] The prefabricated bridge deck auxiliary facility grounding connector described in the present invention is preferably configured such that the fixing ribs are arranged in a "well" shape, and the through hole is arranged at the center of the "well" shape.

[0020] The prefabricated bridge deck ancillary facility grounding connector described in the present invention is preferably configured such that the inner and outer diameters of the force transmission gasket are less than or equal to the inner and outer diameters of the guide plate, so that the metal fixing can pass through the guide plate and be assembled in the embedded mounting seat.

[0021] The prefabricated bridge deck ancillary facility grounding connector described in the present invention is, as a preferred embodiment, provided with at least one axially arranged annular protrusion coaxial with the columnar mounting seat on the columnar side wall to enhance the axial bearing capacity of the embedded mounting seat.

[0022] The steps for prefabrication of grounding connectors include:

[0023] S1. Position the deflector on the outer formwork of the prefabricated bridge deck ancillary facilities;

[0024] S2. Weld the grounding steel bars and connect them in series inside the prefabricated bridge deck ancillary facilities after pouring;

[0025] S3. After the prefabricated bridge deck accessory facility specimen is in the bridge position, tighten the metal fixings to connect the internal guide ribs and beam body of the prefabricated bridge deck accessory facility.

[0026] The prefabricated bridge deck ancillary facilities involved in the grounding connector include a protective wall, a vertical wall, a side wall and a bottom plate. The protective wall and the side wall are respectively arranged at both ends of the bottom plate, the vertical wall is arranged between the protective wall and the side wall, and the protective wall, the vertical wall and the side wall are arranged on the bottom plate in a "mountain" shape.

[0027] The grounding connectors are respectively set at the bottom plate position of the inner side of the protective wall and the side wall, and two connectors are installed on the inner side of the side wall and the protective wall of each prefabricated bridge deck auxiliary facility. The specification of the connector set on the inner side of the protective wall is M30, and the specification of the connector set on the inner side of the side wall is M24. Structural steel bars and embedded grounding steel bars are arranged inside the prefabricated bridge deck ancillary facilities. Grounding terminals are arranged outside each side wall, guard wall and vertical wall. The side wall grounding terminal is arranged at the top of the side wall, and the grounding terminal is connected to a grounding wire arranged inside the side wall. The grounding wire is overlapped with the M24 grounding connector. The fixed ribs arranged laterally by the M24 grounding connector play a fixing and conducting role at the same time, so as to conduct the current on the side of the side wall to the guard wall side. The fixed ribs of the M30 grounding connector on the guard wall side receive the conducted current. The guide ribs arranged on the side of the M30 guide plate are upward L-shaped. The L-shaped guide ribs connect the grounding terminals at the upper end of the guard wall and the outer side of the guard wall. The grounding terminals are thus gathered at the position of the M30 grounding connector, and are transmitted to the embedded mounting seat on the beam body by the metal fixings of the M30 grounding connector.

[0028] Each embedded mounting base is connected in series through a longitudinal grounding wire set on the bridge deck, and a grounding steel bar is set between the longitudinal grounding wires in a transverse direction relative to the beam body. The entire grounding system integrates the current flow of the grounding connector through the grounding wire network inside the beam body and conducts electricity to the ground. Therefore, the complexity of the grounding wire inside the prefabricated bridge deck ancillary facilities can be effectively reduced through the grounding wire and grounding connector of the bridge deck, and the integration of the grounding wire in the prefabricated components is realized, which greatly reduces the assembly difficulty and grounding efficiency.

[0029] The present invention provides a connector for prefabricated bridge deck ancillary facilities, which has the following beneficial effects:

[0030] (1) Through the connection parts grounding and connecting in series inside the bridge deck, the power generation of the bridge deck ancillary facilities is integrated, the grounding efficiency is improved, and a better grounding effect is achieved;

[0031] (2) Through grounding of connectors, prefabricated bridge deck ancillary facilities can be easily connected, the complexity of prefabricated bridge deck splicing can be reduced, and the construction period can be shortened;

[0032] (3) By grounding the connectors, the number of grounding steel bars required inside the prefabricated bridge deck ancillary facilities can be reduced, thereby increasing the integrity of the prefabricated bridge deck ancillary facilities;

[0033] (4) Anchor bars are set on the side wall of the embedded mounting seat to enhance the bearing capacity of the sleeve. The anchor bar structure is simple and easy to manufacture;

[0034] (5) Thin-walled steel pipes are set as reserved grouting holes. When prefabricating the formwork, grouting is injected through the thin-walled steel pipes to fill the internal through holes. The diameter of the through holes is larger than the diameter of the metal fixings to avoid installation problems caused by errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a grounding connector for prefabricated bridge deck ancillary facilities;

[0036] Figure 2 It is a schematic diagram of a metal fixing part of a ground connection part of a prefabricated bridge deck ancillary facility;

[0037] Figure 3 It is a top view schematic diagram of a guide plate of a prefabricated bridge deck auxiliary facility grounding connector embodiment 1;

[0038] Figure 4 It is a schematic diagram of the front view of a guide plate of a prefabricated bridge deck auxiliary facility grounding connector embodiment 1;

[0039] Figure 5 It is a top view schematic diagram of a guide plate of Embodiment 2 of a prefabricated bridge deck auxiliary facility grounding connector;

[0040] Figure 6 It is a schematic diagram of the front view of a guide plate of Embodiment 2 of a prefabricated bridge deck auxiliary facility grounding connector;

[0041] Figure 7 A schematic diagram of a prefabricated bridge deck ancillary facility grounding connector embedded mounting seat;

[0042] Figure 8 It is a schematic diagram of a prefabricated bridge deck auxiliary facility grounding connector mounting seat body;

[0043] Fig. 9 A schematic diagram of a thin-walled steel pipe as a grounding connector for prefabricated bridge deck ancillary facilities;

[0044] Fig.10 The present invention is a schematic diagram of an embodiment of a grounding connector for prefabricated bridge deck ancillary facilities.

[0045] Reference numerals:

[0046] 1. Metal fixings; 11. Screws; 12. Guide contact parts; 13. Top cover; 14. Force transmission gaskets; 2. Guide plates; 21. Guide ribs; 22. Guide plate body; 23. Fixing ribs; 24. Thin-walled steel pipes; 241. Horizontal steel pipes; 242. Vertical steel pipes; 3. Embedded mounting seats; 31. Embedded mounting seat body; 311. Columnar mounting seats; 312. Anchor ribs; 32. Guide cables; 01. Bridge deck; 02. Prefabricated bridge deck ancillary facilities; 021. Grounding terminal. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Example 1

[0049] like Figure 1 As shown, a prefabricated bridge deck accessory facility grounding connector includes a metal fixing 1, an embedded mounting seat 3, and a guide plate 2. The metal fixing 1 assembles the guide plate 2 on the embedded mounting seat 3. The embedded mounting seat 3 is embedded in the upper surface of the bridge deck 01. The guide plate 2 is embedded in the bottom plate of the prefabricated bridge deck accessory facility 02 and is provided with a through hole that penetrates the bottom plate structure. The embedded mounting seat 3 is longitudinally connected in series in the bridge deck 01, and the guide plate 2 is connected to the grounding terminal 021 on the outer surface of the prefabricated bridge deck accessory facility 02.

[0050] like Figure 2 As shown, the metal fixing part 1 includes a screw 11, a guide contact part 12, a top cover 13, and a force transmission gasket 14. The screw 11 is arranged at the upper end of the guide contact part 12, the top cover 13 is arranged at the upper end of the guide contact part 12, the guide contact part 12 contacts the guide plate 2, the force transmission gasket 14 has a through hole and is interference fit with the guide contact part 12 through the through hole, and the lower bottom position of the top cover 13 contacts and connects the force transmission gasket 14.

[0051] The screw rod 11 and the flow-guiding contact part 12 of the metal fixing part 1 are 180 mm in total length, the screw rod 11 is 80 mm long, the metal fixing part 1 is quenched and tempered with 40Cr, the hardness after quenching and tempering reaches HRC32±2, and the metal fixing part 1 is co-infiltrated with multiple alloys. The specification is M24.

[0052] like Figures 3-4As shown, the guide plate 2 includes a guide plate body 22, a fixing rib 23 and a thin-walled steel pipe 24. The guide plate body 22 is provided with a through hole perpendicular to the plate surface. The fixing ribs 23 are all arranged perpendicular to the axis of the through hole. The fixing ribs 23 are welded to the plate surface of the guide plate 2. The length of the fixing rib 23 is greater than the length of the plate surface of the guide plate body 22. The thin-walled steel pipe 24 includes a transverse steel pipe 241 and a vertical steel pipe 242. The transverse steel pipe 241 and the vertical steel pipe 242 are connected in an L-shape and the insides of the steel pipes are connected. The length of the vertical steel pipe 242 is greater than or equal to the height of the guide plate 2. The transverse steel pipe 241 is arranged on the lower bottom surface of the guide plate 2.

[0053] Guide plate 2 is 140mm long, 120mm wide and 16mm high. The guide plate 2 is made of Q355. The chemical composition and mechanical properties of the material should meet the requirements of GB700-88 "Carbon Structural Steel". The embedded mounting seat and embedded pad are positioned and fixed by molds and then fully welded. Anti-corrosion requirements: multi-element alloy co-penetration.

[0054] like Figure 5 As shown, the embedded mounting seat 3 includes an embedded mounting seat body 31 and a guide cable 32. The embedded mounting seat body 31 is connected to one end of the guide cable 32, and the other end of the guide cable 32 is grounded. The embedded mounting seat body 31 includes a columnar mounting seat 311 and an anchor 312. The upper surface of the columnar mounting seat 311 is provided with a threaded countersunk hole. The anchor 312 is L-shaped. The anchor 312 is evenly arranged on the outer periphery of the lower end of the columnar mounting seat 311 and the contact surface is parallel to the axis of the columnar mounting seat 311. The embedded mounting seat 3 is made of 45 steel and tempered. The hardness reaches HRC31±2 after tempering. The embedded mounting seat 3 is subjected to multi-element alloy co-infiltration. The columnar mounting seat 311 is 150mm long, and the embedded mounting seat body 31 is 175mm long in total, wherein the anchor is 110mm long in the vertical direction from the top to the bottom.

[0055] Example 2

[0056] like Figure 1 As shown, a prefabricated bridge deck accessory facility grounding connector includes a metal fixing 1, an embedded mounting seat 3, and a guide plate 2. The metal fixing 1 assembles the guide plate 2 on the embedded mounting seat 3. The embedded mounting seat 3 is embedded in the upper surface of the bridge deck 01. The guide plate 2 is embedded in the bottom plate of the prefabricated bridge deck accessory facility 02 and is provided with a through hole that penetrates the bottom plate structure. The embedded mounting seat 3 is longitudinally connected in series in the bridge deck 01, and the guide plate 2 is connected to the grounding terminal 021 on the outer surface of the prefabricated bridge deck accessory facility 02.

[0057] like Figure 2As shown, the metal fixing part 1 includes a screw 11, a guide contact part 12, a top cover 13, and a force transmission gasket 14. The screw 11 is arranged at the upper end of the guide contact part 12, the top cover 13 is arranged at the upper end of the guide contact part 12, the guide contact part 12 contacts the guide plate 2, the force transmission gasket 14 has a through hole and is interference fit with the guide contact part 12 through the through hole, and the lower bottom position of the top cover 13 contacts and connects the force transmission gasket 14.

[0058] The metal fixing part 1 is of M30 specification, the screw 11 and the guide contact part 12 are 240 mm long in total, the screw 11 is 90 mm long, the metal fixing part 1 is treated with 40Cr tempering, and the hardness reaches HRC32±2 after tempering, and the metal fixing part 1 is subjected to multi-element alloy co-infiltration.

[0059] like Figures 5-6 As shown, the guide plate 2 includes a guide rib 21, a guide plate body 22, a fixing rib 23 and a thin-walled steel pipe 24. The guide plate body 22 is provided with a through hole perpendicular to the plate surface. The metal fixing part 1 passes through the through hole of the guide plate body 22 to assemble the guide plate 2 to the threaded countersunk hole of the columnar mounting seat 311. The guide rib 21 and the fixing rib 23 are both arranged perpendicular to the axis of the through hole. The guide rib 21 is connected to the guide plate body 22. The fixing rib 23 is welded to the plate surface of the guide plate 2. The length of the fixing rib 23 is greater than the length of the plate surface of the guide plate body 22. The thin-walled steel pipe 24 includes a transverse steel pipe 241 and a vertical steel pipe 242. The transverse steel pipe 241 and the vertical steel pipe 242 are connected in an L-shaped manner and the steel pipes are connected internally. The length of the vertical steel pipe 242 is greater than or equal to the height of the guide plate 2. The transverse steel pipe 241 is arranged on the lower bottom surface of the guide plate 2. One end of the guide rib 21 is arranged on the side of the guide plate 2, and the other end of the guide rib 21 is connected to the grounding terminal. The fixing ribs 23 are arranged in a "well" shape, and the through hole is arranged at the center of the "well" shape.

[0060] The guide plate is 150mm long, 130mm wide and 20mm thick. The guide plate 2 is made of Q355. The chemical composition and mechanical properties of the material should meet the requirements of GB700-88 "Carbon Structural Steel". The embedded mounting seat and embedded pad are positioned and fixed by molds and then fully welded. Anti-corrosion requirements: multi-element alloy co-penetration.

[0061] like Figure 5As shown, the embedded mounting seat 3 includes an embedded mounting seat body 31 and a guide cable 32. The embedded mounting seat body 31 is connected to one end of the guide cable 32, and the other end of the guide cable 32 is grounded. The embedded mounting seat body 31 includes a columnar mounting seat 311 and an anchor 312. The upper surface of the columnar mounting seat 311 is provided with a threaded countersunk hole. The anchor 312 is L-shaped. The anchor 312 is evenly arranged on the outer periphery of the lower end of the columnar mounting seat 311 and the contact surface is parallel to the axis of the columnar mounting seat 311. The embedded mounting seat 3 is made of 45 steel and tempered. The hardness reaches HRC31±2 after tempering. The embedded mounting seat 3 is subjected to multi-element alloy co-infiltration. The columnar mounting seat 311 is 200mm long, and the embedded mounting seat body 31 is 305mm long in total, wherein the anchor is 210mm long in the vertical direction from the top to the bottom.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prefabricated bridge deck auxiliary facility grounding connector, characterized in that: It comprises a metal fixing part (1), a pre-embedded mounting seat (3), and a guide plate (2), wherein the metal fixing part (1) assembles the guide plate (2) on the pre-embedded mounting seat (3), the pre-embedded mounting seat (3) is pre-embedded in the upper surface of the bridge deck (01), the guide plate (2) is pre-embedded in the bottom plate of the prefabricated bridge deck auxiliary facility (02) and is provided with a through hole penetrating the bottom plate structure, the pre-embedded mounting seat (3) is longitudinally connected in series in the bridge deck (01), and the guide plate (2) is connected to a grounding terminal (021) on the outer surface of the prefabricated bridge deck auxiliary facility (02); The embedded mounting seat (3) comprises an embedded mounting seat body (31) and a guide cable (32); the embedded mounting seat body (31) is connected to one end of the guide cable (32); the other end of the guide cable (32) is grounded; the embedded mounting seat body (31) comprises a columnar mounting seat (311) and an anchor bar (312); a threaded countersunk hole is provided on the upper surface of the columnar mounting seat (311); the anchor bar (312) is L-shaped; the anchor bar (312) is evenly arranged on the outer periphery of the lower end of the columnar mounting seat (311) and the contact surface is parallel to the axis of the columnar mounting seat (311); The guide plate (2) comprises a guide plate body (22) and fixing ribs (23); the guide plate body (22) is provided with through holes perpendicular to the plate surface; the fixing ribs (23) are arranged perpendicular to the axes of the through holes; the fixing ribs (23) are welded to the plate surface of the guide plate (2); and the length of the fixing ribs (23) is greater than the length of the plate surface of the guide plate body (22); The guide plate (2) further comprises a thin-walled steel pipe (24), the thin-walled steel pipe (24) comprising a transverse steel pipe (241) and a vertical steel pipe (242), the transverse steel pipe (241) and the vertical steel pipe (242) being connected in an L-shape and the insides of the steel pipes being connected, the length of the vertical steel pipe (242) being greater than or equal to the height of the guide plate (2), and the transverse steel pipe (241) being arranged on the lower bottom surface of the guide plate (2); The guide plate (2) is 140 mm long, 120 mm wide and 16 mm high, and the guide plate (2) is made of Q355.

2. A prefabricated bridge deck auxiliary facility grounding connector according to claim 1, characterized in that: The metal fixing member (1) comprises a screw (11), a flow guide contact portion (12), a top cover (13) and a force transmission gasket (14); the screw (11) is arranged at the upper end of the flow guide contact portion (12); the top cover (13) is arranged at the upper end of the flow guide contact portion (12); the flow guide contact portion (12) contacts the flow guide plate (2); the force transmission gasket (14) has a through hole and is interference-fitted with the flow guide contact portion (12) through the through hole; and the bottom of the top cover (13) contacts and is connected to the force transmission gasket (14).

3. A prefabricated bridge deck auxiliary facility grounding connector according to claim 1, characterized in that: The guide plate (2) further comprises a guide rib (21); the metal fixing piece (1) passes through a through hole of the guide plate body (22) to assemble the guide plate (2) to a threaded countersunk hole of the columnar mounting seat (311); the guide rib (21) is arranged perpendicular to the axis of the through hole; and the guide rib (21) is connected to the guide plate body (22).

4. A prefabricated bridge deck auxiliary facility grounding connector according to claim 3, characterized in that: One end of the flow guiding rib (21) is arranged on the side of the flow guiding plate (2), and the other end of the flow guiding rib (21) is connected to the grounding terminal.

5. The prefabricated bridge deck auxiliary facility grounding connector according to claim 3, characterized in that: The fixing rib (23) is arranged in a "well" shape, and the through hole is arranged at the center of the "well" shape.

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